Solving-linear-equation

matlab上的OFDM系统仿真，完整的一套系统，已经测试过可以运行。(An ofdm system on matlab environment。)

用MATLAB设计一个低通和带通滤波器,传统的数字滤波器的设计过程复杂，计算工作量大，滤波特性调整困难，影响了它的应用。本文介绍了一种利用MATLAB信号处理工具箱（Signal Processing Toolbox）快速有效的设计由软件组成的常规数字滤波器的设计方法。给出了使用MATLAB语言进行程序设计和利用信号处理工具箱的FDATool工具进行界面设计的详细步骤。(design a digital filter use matlab)

一种基于《The Discrete Fractional Cosine and Sine Transforms》分数阶傅立叶变换程序(Fractional fourier transform based on <<The Discrete Fractional Cosine and Sine Transforms>>)

matlab经典算法程序：插值，规划问题，数据分析，解方程，绘图(matlab ,algorithm)

电位电极系测井曲线，用matlab编写,可用于学测井的人参考(Potential electrode system logs, prepared by matlab, people can learn logging for reference)

最速下降法,是一种最优化的算法，针对无约束的优化问题有效(Steepest descent method, an optimization algorithm is effective for unconstrained optimization problems)

相关器可以主要对不同的信号做相关检测，可以用于信号的提取，以及时间延迟的计算(Correlator can be mainly related to do different signal detection, can be used for signal extraction, as well as the time delay calculation)

DCT based Image Watermarking matlab code

说明：  this is a source for regression and decision

巴特沃斯滤波器，主要实现的是低通信号，此功能模块的低通曲线很符合理想的幅频特性。(Butterworth filter, the main achievement is low traffic numbers, the low-pass curve is consistent with this function module ideal frequency characteristics.)